The ratio of last year income of A, B and C is 3 : 4 : 5. While the ratio is their last year income to current year income is 4 : 5, 2 : 3 and 3 : 4 respectively. If their total current year income is Rs. 98,500 then find the present income of B + C.
Answer & explanation
Correct answer: option 1
Last Year : Current Year
A 4 : 5
B 2 : 3
C 3 : 4
*According to this ratio of last year income of A, B and C is 4 : 2 : 3 but according to question it should be 3 : 4 : 5
Therefor in this situation always follow two steps
a) Make it in the ratio 1 : 1 : 1
b) multiply by the new ratio in which we want to convert
a) L. Y. : C.Y.
A 3 x (4 : 5
B 6 x (2 : 3
C 4 x (3 : 4
b) L.Y. : C.Y.
A 3 x 3 x (4 : 5
B 4 x 6 x (2 : 3
C 5 x 4 x (3 : 4
New Ratio
L.Y. : C.Y.
A -- : 45
B -- : 72
C -- : 80
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Total C.Y. = 197R = 98500 (given)
1R = 500
Hence,
C.Y. income of B + C = 72R + 80R= 152R = 152 x 500 = Rs.76000